<?php

class PostController extends AweController
{
	/**
	 * @var string the default layout for the views. Defaults to '//layouts/column2', meaning
	 * using two-column layout. See 'protected/views/layouts/column2.php'.
	 */
    public $layout = '//layouts/column2';
	/**
	 * @var CActiveRecord the currently loaded data model instance.
	 */
    private $_model;
	/**
	 * Displays a particular model.
	 * @param integer $id the ID of the model to be displayed
	 */
	public function actionView($id)
	{
		$this->render('view', array(
			'model' => $this->loadModel($id),
		));
	}

	/**
	 * Creates a new model.
	 * If creation is successful, the browser will be redirected to the 'view' page.
	 */
	public function actionCreate()
	{
		$model = new Post;

        $this->performAjaxValidation($model, 'post-form');

        if(isset($_POST['Post']))
		{
                if (isset($_POST['Post']['parent'])) $model->parent = $_POST['Post']['parent'];
			$model->attributes = $_POST['Post'];
			if($model->save()) {
                $this->redirect(array('view', 'id' => $model->id));
            }
		}

		$this->render('create',array(
			'model' => $model,
		));
	}

	/**
	 * Updates a particular model.
	 * If update is successful, the browser will be redirected to the 'view' page.
	 * @param integer $id the ID of the model to be updated
	 */
	public function actionUpdate($id)
	{
		$model = $this->loadModel($id);

        $this->performAjaxValidation($model, 'post-form');

		if(isset($_POST['Post']))
		{
                if (isset($_POST['Post']['parent'])) $model->parent = $_POST['Post']['parent'];
                $model->parent = array();
			$model->attributes = $_POST['Post'];
			if($model->save()) {
				$this->redirect(array('view','id' => $model->id));
            }
		}

		$this->render('update',array(
			'model' => $model,
		));
	}

	/**
	 * Deletes a particular model.
	 * If deletion is successful, the browser will be redirected to the 'admin' page.
	 * @param integer $id the ID of the model to be deleted
	 */
	public function actionDelete($id)
	{
		if(Yii::app()->request->isPostRequest)
		{
			// we only allow deletion via POST request
			$this->loadModel($id)->delete();

			// if AJAX request (triggered by deletion via admin grid view), we should not redirect the browser
			if(!isset($_GET['ajax']))
				$this->redirect(isset($_POST['returnUrl']) ? $_POST['returnUrl'] : array('admin'));
		}
		else
			throw new CHttpException(400, 'Invalid request. Please do not repeat this request again.');
	}

	/**
	 * Lists all models.
	 */
	public function actionIndex()
	{
		$criteria=new CDbCriteria(array(
	        'condition'=>'status='.Post::STATUS_PUBLISHED,
	        'order'=>'update_time DESC',
    	));
    
    	$dataProvider=new CActiveDataProvider('Post', array(
	        'pagination'=>array(
	            'pageSize'=>5,
	        ),
	        'criteria'=>$criteria,
    	));
    
		$this->render('index', array(
			'dataProvider' => $dataProvider,
		));
	}

	/**
	 * Manages all models.
	 */
	public function actionAdmin()
	{
		$model = new Post('search');
		$model->unsetAttributes(); // clear any default values
		if(isset($_GET['Post']))
			$model->attributes = $_GET['Post'];

		$this->render('admin', array(
			'model' => $model,
		));
	}

	/**
	 * Returns the data model based on the primary key given in the GET variable.
	 * If the data model is not found, an HTTP exception will be raised.
	 * @param integer the ID of the model to be loaded
	 */
	public function loadModel($id, $modelClass=__CLASS__)
	{
		if($this->_model===null) {
        if(isset($_GET['id']))
        {
            if(Yii::app()->user->isGuest) {
                $condition='status='.Post::STATUS_PUBLISHED
                    .' OR status='.Post::STATUS_ARCHIVED;
            }else {
                $condition='';
            }
            $this->_model=Post::model()->findByPk($_GET['id'], $condition);
        }
        if($this->_model===null) {
            throw new CHttpException(404,'The requested page does not exist.');
        }
    }
    return $this->_model;
	}

	/**
	 * Performs the AJAX validation.
	 * @param CModel the model to be validated
	 */
	protected function performAjaxValidation($model, $form=null)
	{
		if(isset($_POST['ajax']) && $_POST['ajax'] === 'post-form')
		{
			echo CActiveForm::validate($model);
			Yii::app()->end();
		}
	}
}
